Reverse gear



Jan. 5, 1932. J. v. PETRl-:LLI

REVERSE GEAR Filed April 9, 1928 3 Sheets-Sheet Jan. 5, 1932. J* V, PETRELU 1,839,991

REVERSE GEAR Filed April 9, 1928 s sheets-sheet 2 Jan. 5, 1932.. i J V. PETRELU u 1,839,991

REVERSE GEAR Filed April 9, 1928 5 Sheets-Sheet 3,

Patented Jan. 5, k1932 t UNITED STATES"V PATENT OF F ICEV d Josera V. rnrnnnnr. or nocnnnnnfmiw Yoan l A Y y REVERSE einen` f i p Application led y'April 9, 192787. Serial No.; 268,783..`

Y This inventionrelates to aI combination remember 15 so that these clutch members versing gear and clutch and has for-its object simultaneously rotate in opposite directions. to provide such a mechanism'which is rugged, YWithin the cup-shaped clutch members 15r compact, simple,-and inexpensive. Another and 17 is a shiftable clutch part24 forcooper- 3 object is to provide a dev-iceof thisclassY ation with either of said 4clutch members. ,55

i anism. i

which is especially adapted Orma-rine pur- This clutch partis splined on the driven'shaft poses. A further object is the provision of 25.*y Around,thefperiphery'of the shiftable friction discs to distribute the wearand proclutch part 211'is provided bearing metal 26 long the Clutch life in the above type .meehfk which assists inl supporting theadjacent end f i portions of said. clutch members. Betweenfeo According to this invention two spaced 'si-V. the clutch part'24 and clutch member' k15 are multaneously oppositely rota-ting clutch a series` of friction discsalternate ones being membersare provided with ashiftable clutch` Spline-d to the shafty 25 While the OthelS are part between them for engagement with splined to the clutchmember 15 as( illustrated *315 either. Means are yprovided to adjust the whereby, these ldiscs must rotate `with the 65 cooperative pressure on said shiftable clutch. shaft'25 and clutch part 15. The set of discs part in either direction. A housing -is pro- 27 is for direct drive between the engine and vided to enclose the clutch members and propeller while on the opposite Side 05th@ clutchV part and this means for varying the shiftable clutch part 24C is another set of discs '1,123 axial thrust on the clutch part is made adjust-l 28 halfof which are splined to the clutch'70 able from outside said housing. Means are part 24er itsv extension 29while the alternate also provided to preventy transmission vof any ones or other' half are similarly splined to unbalanced thrusts to the housingfor to the the Clutch part/,17. This last set of discs 28 driving or driven shaft-s connected to said When compressedtransmit motionfrom the clutch part and clutch members. jclutch member 17 kto the clutchpart2et for 75 Referringto the drawings :v reversalof the propeller and since thisset of Fig. V1 is a longitudinal View partly `in seediscs is not used asmuch as the Ifirst set 27 tion of one embodiment of this invention; their area-is less." Theextension 29 on the Fig. 2 is a section on the line 2-2 of Fig. 1; clutch part 24 is journalledwithin a bearing fili) Fig. 8 is a section on the line 343 of Fig. 2. vOiinside the clutchymember .17` and bearing 80 The embodiment illustrated. is especially 16. As the sha-ft 25'is within this extension adapted for marine purposes when theshat I and rotatestherewith it will be seen that this l0 is connected 4with the motor orengine bearingBO is likewise forthe shaft 25. The while the drivenshaft 25 isconnectedyto thek other end ofthe shaftis supported bythe "35 propeller. A housing 12 encloses a combined ball bearing 31 withinfthe clutchmember 15u85 reversing mechanism and clutch actuatedby I `Threaded von the extension 29k is a thrust the control handle 13.v LA clutch member 15? nut32. f A thrust collarg33 kis slidable` over on the shaft 10`is providedwithfa bearingll-Q the` extension 29 and yabuts against the ,befir- While the opposite cupshaped yclutch mem-, ing y30.` For increasing the spacing between @im ber 17 of somewhat similar crossV section/isA thrusty nut 32 land lmember 33 are provided 90 provided with a bearing 16..... Journalled inl levers 34 which when opened cause theircam the housing.12 above these clutch members v surfaces 35 toengage the thrust member 33 15 and V1 7 are the shafts 18 and 19 Ycarrying f and shiftthe clutch part 211to the right in Fig. v gears 2O and 2.1 which inter-mesh and each 1 compressing thefset offdiscs 28 and causgear engages teeth on one of the clutch 111cm-,V ingjthe propeller to reverse. Another thrust 95 i bers. As shown in Fig. 3 the gears 2O and 211. nutj36 engagesrthe threads 37 on the shaft inter-mesh in a` space betweenxthe teeth` on. 25.:V y Thesethreads are lslotted at 38 sov that f said clutch members, thefgear .2O meshing i some form of key or. other locking means withvthe teeth 23 on clutch member 17.While may be retained in the slot 38 to prevent the T33 thegear21 engages the teeth `22.0n theg'clutch nut Srfrom rotating. Another setof leversl l 100 said extension nut being of a length and f shape to engage said sleeve and abutment for shifting said extension on movement of sald sleeve 1n one direction, the second set of levers on said extension being of a differenty length than the first mentioned set and for cooperation with other cam surfaces on lsaid sleeve and shaped to engage said abutment nut for shifting said extension in the opposite direction.

Y3. In reversing gearing, the combination of a driving member, a driven shaft, asleeve shiftable and splined thereon, a member revoluble on the sleeve, gears on the driving member and said revoluble member, pinions f operatively connecting said gears, a clutch member on said sleeve, a set of clutch discs intermediate saidk clutch member and the driving'member, another set of clutch discs l intermediate said clutch member and the revoluble member, a thrust collar in movable relation to said sleeve, a thrust collar fixed on the shaft, an operating member fixedon said sleeve between said collars, a-shlfter, andtwo sets of Adogs on said operating member actuated by the shifter and cooperating respectively with the two thrust collars to move the sleeve in opposite directions and effect driving through the respective sets of clutch discs.

4. In reversing gearing, the combination of a driving member, a driven shaft, a sleeveshiftable and splined thereon, a member revoluble on the sleeve ears on the drivinor v member and said revoluble member, pinions operatively connecting said gears, a clutch member on said sleeve, a set of clutch discs intermediate said clutch member and the driving member, another set of clutch discs intermediate said clutch member and the revoluble member, a thrust collar in movable relation to said sleeve, a thrust collar fixed on the shaft, an operating member fixed on said sleeve between said collars, a shifter, and two sets of dogs on lsaid operating member actuated by the shifter andcooperating respectively with the two thrust colla-rs to move lthe sleeve in opposite directions and effect driving through the respective sets of clutch discs, each set of dogs having cam members to cooperate with the respective n thrust collars.

In testimony whereof I afIiX my signature.

JOSEPH V. PETRELLL 

